Problem-Solving and Data AnalysisEasyCount from a sample percentage
Problem-Solving and Data Analysis practice question
In a random sample of 400 voters, 30% said they would vote for the new library. How many of the 400 voters said this?
Answer: 120
30% of 400 = 0.3 × 400 = 120.
Common wrong answers
- If you answered 30
- 30 is the percent, not the count.
- If you answered 280
- 280 is the 70% who did not say it.
- If you answered 1200
- 1,200 misplaces the decimal.
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